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Old 01-11-2008, 11:44 AM   #1
Scooby Specialist
Member#: 117780
Join Date: Jun 2006
Chapter/Region: South East
Location: Jackson, MS
2004 WRX
Aspen White

Default Upgraded 2.0 heads with 2.5 block

Planned mods:
2.5 STi bottom end
Perrin headers/up-pipe
turboXS TBE
Large TMIC
20G turbo

Is it worth doing headwork ie. Porting/polishing heads, 264/264 cams, full ferrea valve train? "Worth" meaning will i see extra power?
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Old 01-11-2008, 07:52 PM   #2
Scooby Specialist
Member#: 86274
Join Date: May 2005
Chapter/Region: MAIC
Location: Crofton, MD
. Andrewtech
Gold Club Member


Of course you'll see extra power but whether or not its worth the added cost, thats up to you. I asked my tuner if it was worth upgrading the heads when I did my hybrid build and they told me unless I'm planning to go big with the turbo, it's not orth it. You're only doing a 20g so I'd say sock heads would be fine.
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Old 01-11-2008, 09:08 PM   #3
Scooby Specialist
Member#: 50993
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Philly
02 WRX Wagon
2.5/Blouch Dom 3/Meth/6sp


I have a hybrid setup with a FP Green turbo, stock heads, STI cams and the car is awesome. I also have Perrin headers,TXS TBE and a TXS TMIC and Meth. Talk about a wolf in sheeps clothing......It's just a little wagon..
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Old 01-11-2008, 09:21 PM   #4
Scooby Newbie
Member#: 130276
Join Date: Oct 2006
Chapter/Region: NESIC
Location: Putnam, CT
2004 STi


Anything you do will make extra power. The horsepower per dollar equation is always the key, and how fast you want to go. I have a 2.5 hybrid with a FP green and stock 2.0 heads and I put 400 to the wheels on pumpgas.... thats plenty for a daily driver.. :-)
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